CN201355303Y - Vibration testing device of vanes - Google Patents
Vibration testing device of vanes Download PDFInfo
- Publication number
- CN201355303Y CN201355303Y CNU2009200634798U CN200920063479U CN201355303Y CN 201355303 Y CN201355303 Y CN 201355303Y CN U2009200634798 U CNU2009200634798 U CN U2009200634798U CN 200920063479 U CN200920063479 U CN 200920063479U CN 201355303 Y CN201355303 Y CN 201355303Y
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- blade
- bracing
- vice body
- test unit
- pedestal
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Abstract
The utility model discloses a vibration testing device of vanes, which comprises a base, a supporting device, a detecting device support and a vibrating device used for enabling the vanes to generate vibration, wherein the supporting device, the vibrating device and the detecting device support are all arranged on the base, a vane fixing device used for fixing vanes is arranged on the supporting device, and the detecting device support is arranged on the periphery of a detected vane. The vibration testing device of vanes has the advantages of simple and smart structure and low manufacturing cost, and is suitable for teaching experiment.
Description
Technical field
The utility model relates to the testing equipment in steam turbine, the wind energy conversion system vibration-testing field, relates in particular to a kind of blade vibration test unit.
Background technology
Blade is the important composition parts in the power-equipments such as steam turbine, wind energy conversion system, blade is not only bearing huge centrifugal force when high speed rotating, steady-state gas flow power, also bearing the effect of unstable state air-flow power, blade vibration is inevitably, and vibrating fatigue is the one of the main reasons that the blade accident takes place.Therefore, be necessary to verify blade vibration mechanism by the blade vibration test, for blade construction design provides test figure, and verify that the countermeasure of being taked can make the blade vibration amplitude be in all the time in the limited field of permission, does not influence the security of operation of unit with the vibration that guarantees blade.Subject matter and weak point that existing rotating machinery blade vibration test unit exists mainly show following point: 1, experiment table complex structure, manufacturing cost height; 2, the vanes fixed device is non-adjustable, needs the difference according to the blade dimensions size, selects different vanes fixed devices, and the blade installation steps are more loaded down with trivial details; 3, can not satisfy the requirement of modal test.
The utility model content
The technical problems to be solved in the utility model is to overcome the deficiencies in the prior art, provide a kind of simple in structure small and exquisite, cost of manufacture is low, be convenient to install, simple to operate, the blade vibration test unit that is applicable to education experiment.
For solving the problems of the technologies described above, the utility model by the following technical solutions:
A kind of blade vibration test unit, it is characterized in that comprising pedestal, bracing or strutting arrangement, checkout equipment support and be used to make the vibrative vibrating device of blade, described bracing or strutting arrangement, vibrating device and checkout equipment support all are installed on the pedestal, bracing or strutting arrangement is provided with the vanes fixed device that is used for fixing blade, and described checkout equipment props up and is set up in detected blade periphery.
Described bracing or strutting arrangement comprises bracing frame and positioning screw, fixedlys connected with pedestal by positioning screw in the support frame as described above bottom.
Described positioning screw is arranged with support spring outward, and described support spring is located between bracing frame and the pedestal.
Described bracing or strutting arrangement comprises bracing frame, is equiped with support spring between support frame as described above and the pedestal.
Described vanes fixed device comprises portal support, fixedly vice body, movable vice body and adjusting screw(rod), described portal support both sides are column, described column lower end is fixed on the bracing or strutting arrangement, rack beam is established in the column upper end, and described fixedly vice body and movable vice body are installed between two columns, and fixedly vice body is positioned at the column bottom, movable vice body is fixedly between vice body and the rack beam, described rack beam is provided with screw, and described adjusting screw(rod) is installed in this screw, and the lower end is connected with movable vice body.
Described column is provided with guide rail, and movable vice body two ends are provided with chute, and described chute is slidedly arranged on the guide rail.
Described column and rack beam are the one-piece construction of cast form.
Described column and rack beam are for dividing body structure, and rack beam is connected by securing member with column.
Described pedestal is provided with the T type groove that is used to install vibrating device and checkout equipment support.
Compared with prior art, advantage of the present utility model is:
1, one-piece construction is simply small and exquisite, cost of manufacture is low, be convenient to installation, simple to operate, with the vanes fixed device one end of blade is fixed during use, output terminal with vibrating device is connected with blade then, at detected blade periphery checkout equipment support, on the checkout equipment support eddy current displacement sensor or damper can be installed, decide according to the vibration-testing needs quantity of checkout equipment support and installation site, after vibrating device makes blade produce forced vibration, detect the vibration parameters of blade by vibration signal sensor.
2, the vanes fixed device is installed on the bracing or strutting arrangement, generally, can adopt positioning screw that bracing or strutting arrangement is fixed on the pedestal; In the time of need doing the blade vibration modal test, can adopt the mode that support spring is set between bracing or strutting arrangement and pedestal, with support spring bracing or strutting arrangement is supported, bracing or strutting arrangement and vanes fixed device can vertically be vibrated, satisfy the requirement of blade vibration modal test; If adopt the unitized construction of support spring and positioning screw, support spring is sheathed on outside the positioning screw, then can be when carrying out common experiment the screwed in place screw rod, bracing or strutting arrangement is fixedlyed connected with pedestal, unscrew positioning screw when carrying out modal test, bracing or strutting arrangement is supported by support spring, positioning screw can play the effect that the restriction bracing or strutting arrangement moves horizontally simultaneously, make bracing or strutting arrangement can only do the motion of vertical direction, guarantee the accuracy of modal test.
3, adopt the vanes fixed device that structure is flexible, stroke is adjustable that blade is fixed, be not only applicable to the different blade of fixed measure, also can be used for the fixing vane group of forming by many blades.
4, pedestal is provided with T type groove, is convenient to install vibrating device and checkout equipment support, adjusts the installation site of vibrating device and checkout equipment support.
Description of drawings
Fig. 1 is the main TV structure synoptic diagram of the utility model embodiment 1;
Fig. 2 is the left TV structure synoptic diagram of the utility model embodiment 1;
Fig. 3 is an A-A cross section view among Fig. 2;
Fig. 4 is a B-B cross section view among Fig. 2;
Fig. 5 is a C-C cross section view among Fig. 1;
Fig. 6 is the main TV structure synoptic diagram of the utility model embodiment 2;
Fig. 7 is the left TV structure synoptic diagram of the utility model embodiment 2;
Fig. 8 is the main TV structure synoptic diagram of the utility model embodiment 3;
Fig. 9 is the plan structure synoptic diagram of the utility model embodiment 3;
Figure 10 is the left TV structure synoptic diagram of the utility model embodiment 3.
Each label is represented among the figure:
1, pedestal 2, bracing or strutting arrangement
3, vanes fixed device 4, vibrating device
5, checkout equipment support 6, blade
11, T type groove 21, bracing frame
22, positioning screw 23, support spring
31, portal support 32, fixing vice body
33, movable vice body 34, adjusting screw(rod)
35, back-up ring 36, straight pin
37, jaw plate 311, column
312, rack beam 313, guide rail
331, chute 341, rotating handles
Embodiment
Embodiment 1: extremely shown in Figure 5 as Fig. 1, a kind of blade vibration test unit of the present utility model, comprise pedestal 1, bracing or strutting arrangement 2, vibrating device 4 and checkout equipment support 5, pedestal 1 is provided with T type groove 11, end fittable slackening device 2 at pedestal 1, the other end is installed vibrating device 4, the output shaft of this vibrating device 4 is arranged with the direction perpendicular to pedestal 1, be used to make detected blade 6 to do the vibration of vertical direction, bracing or strutting arrangement 2 is provided with vanes fixed device 3, when carrying out the blade vibration test, one end of blade 6 is by 3 clampings of vanes fixed device, the other end is connected with vibrating device 4, an and end installing force sensor that joins at vibrating device 4 output shafts and blade, at checkout equipment support 5 of detected blade 6 periphery, this checkout equipment support 5 is used to install checkout equipments such as damper or blade eddy current displacement sensor, the quantity and the installation site of checkout equipment support 5 can be set according to testing requirements in different tests, also can on blade 6, speed pickup be set simultaneously according to the test needs.In the present embodiment, bracing or strutting arrangement 2 comprises that bracing frame 21 and 22, four positioning screws 22 of four positioning screws are arranged in four jiaos of bracing frame 21 bottoms, and bracing frame 21 is fixedlyed connected with pedestal 1 by positioning screw 22.Be arranged with support spring 23 outside the positioning screw 22, support spring 23 is located between bracing frame 21 and the pedestal 1, is equipped with the shrinkage pool that is used for ccontaining support spring 23 on bracing frame 21 and the pedestal 1.Screwed in place screw rod 22 when carrying out common experiment, bracing or strutting arrangement 2 is fixedlyed connected with pedestal 1, when carrying out modal test, unscrew positioning screw 22, bracing or strutting arrangement 2 is supported by support spring 23, positioning screw 22 can play the effect that restriction bracing or strutting arrangement 2 moves horizontally simultaneously, make bracing or strutting arrangement 2 can only do the motion of vertical direction, guarantee the accuracy of modal test.In the present embodiment, vanes fixed device 3 comprises portal support 31, fixedly vice body 32, movable vice body 33 and adjusting screw(rod) 34, portal support 31 both sides are column 311, column 311 lower ends are fixed on the bracing or strutting arrangement 2, rack beam 312 is established in the upper end, column 311 is the one-piece construction of cast form with rack beam 312, this structural stability is good, be convenient to assembling, fixedly vice body 32 and movable vice body 33 are installed between two columns 311, fixedly vice body 32 is positioned at column 311 bottoms, and movable vice body 33 is fixedly between vice body 32 and the rack beam 312, in order to improve clamping stability, fixedly on vice body 32 and the movable vice body 33 jaw plate 37 is being housed all, rack beam 312 is provided with screw, and adjusting screw(rod) 34 is installed in this screw, and adjusting screw(rod) 34 upper ends are provided with rotating handles 341, the lower end is passed movable vice body 33 and is fixedlyed connected by straight pin 36 with a back-up ring 35, column 311 is provided with guide rail 313, and movable vice body 33 two ends are provided with chute 331, and chute 331 is slidedly arranged on the guide rail 313.By 34 rotations of rotating handles 341 controllable adjustable screw rods, make adjusting screw(rod) 34 drive activity vice bodies 33 under the constraint of chute 331 and guide rail 313, do downward or upward motion, make this vanes fixed device 3 not be only applicable to the different blade of fixed measure 6, also can be used for the fixing vane group of forming by many blades 6.
Blade vibration test unit one-piece construction of the present utility model is simply small and exquisite, cost of manufacture is low, be convenient to install, simple to operate, with vanes fixed device 3 end of blade 6 is fixed during use, output terminal with vibrating device 4 is connected with blade 6 then, at detected blade 6 periphery checkout equipment supports 5, on the checkout equipment support 5 vibration signal sensor or damper can be installed, decide according to the vibration-testing needs quantity of checkout equipment support 5 and installation site, after vibrating device 4 makes blade 6 produce forced vibration, detect the vibration parameters of blade by vibration signal sensor.
Embodiment 2: as shown in Figure 6 and Figure 7, a kind of blade vibration test unit of the present utility model, comprise pedestal 1, bracing or strutting arrangement 2, vibrating device 4 and checkout equipment support 5, pedestal 1 is provided with T type groove 11, and (the T type groove 11 in the present embodiment is identical with embodiment 1, its structure is referring to Fig. 5), end fittable slackening device 2 at pedestal 1, the other end is installed vibrating device 4, the output shaft of this vibrating device 4 is arranged with the direction perpendicular to pedestal 1, be used to make detected blade 6 to do the vibration of vertical direction, bracing or strutting arrangement 2 is provided with vanes fixed device 3, when carrying out the blade vibration test, one end of blade 6 is by 3 clampings of vanes fixed device, the other end is connected with vibrating device 4, an and end installing force sensor that joins at vibrating device 4 output shafts and blade, at checkout equipment support 5 of detected blade 6 periphery, this checkout equipment support 5 is used to install checkout equipments such as damper or blade eddy current displacement sensor, the quantity and the installation site of checkout equipment support 5 can be set according to testing requirements in different tests, also can on blade 6, speed pickup be set simultaneously according to the test needs.In the present embodiment, bracing or strutting arrangement 2 comprises bracing frame 21, be equiped with four support springs 23 between bracing frame 21 and the pedestal 1, four support springs 23 are arranged in four jiaos of pedestal 1, pedestal 1 is provided with the shrinkage pool that is used for ccontaining support spring 23, in this shrinkage pool and bracing frame 21 bottoms are equipped with the boss that is used for support spring 23 location, blade vibration test unit in the present embodiment is exclusively used in the blade vibration modal test, when blade 6 is done the vibration of vertical direction, bracing or strutting arrangement 2 and vanes fixed device 3 can vertically vibrate, satisfy the requirement of blade vibration modal test, the boss and the shrinkage pool that are used to install support spring 23 can limit support spring 23 motion in the horizontal direction, improve the accuracy of modal test.In the present embodiment, vanes fixed device 3 comprises portal support 31, fixedly vice body 32, movable vice body 33 and adjusting screw(rod) 34, portal support 31 both sides are column 311, column 311 lower ends are fixed on the bracing or strutting arrangement 2, rack beam 312 is established in the upper end, and column 311 is the branch body structure with rack beam 312, and rack beam 312 is connected by securing member with column 311, this structure is convenient to make, and can save cost of manufacture.Fixedly vice body 32 and movable vice body 33 are installed between two columns 311, fixedly vice body 32 is positioned at column 311 bottoms, movable vice body 33 is fixedly between vice body 32 and the rack beam 312, in order to improve clamping stability, fixedly on vice body 32 and the movable vice body 33 jaw plate 37 is being housed all, rack beam 312 is provided with screw, adjusting screw(rod) 34 is installed in this screw, adjusting screw(rod) 34 upper ends are provided with rotating handles 341, the lower end is passed movable vice body 33 and is fixedlyed connected by straight pin 36 with a back-up ring 35, column 311 is provided with guide rail 313, and movable vice body 33 two ends are provided with chute 331, and chute 331 is slidedly arranged on the guide rail 313.By 34 rotations of rotating handles 341 controllable adjustable screw rods, make adjusting screw(rod) 34 drive activity vice bodies 33 under the constraint of chute 331 and guide rail 313, do downward or upward motion, make this vanes fixed device 3 not be only applicable to the different blade of fixed measure 6, also can be used for the fixing vane group of forming by many blades 6.
Blade vibration test unit one-piece construction of the present utility model is simply small and exquisite, cost of manufacture is low, be convenient to install, simple to operate, with vanes fixed device 3 end of blade 6 is fixed during use, output terminal with vibrating device 4 is connected with blade 6 then, at detected blade 6 periphery checkout equipment supports 5, on the checkout equipment support 5 vibration signal sensor or damper can be installed, decide according to the vibration-testing needs quantity of checkout equipment support 5 and installation site, after vibrating device 4 makes blade 6 produce forced vibration, detect the vibration parameters of blade by vibration signal sensor.
Embodiment 3: extremely shown in Figure 10 as Fig. 8, a kind of blade vibration test unit of the present utility model, comprise pedestal 1, bracing or strutting arrangement 2, vibrating device 4 and checkout equipment support 5, pedestal 1 is provided with T type groove 11, end fittable slackening device 2 at pedestal 1, the other end is installed vibrating device 4, the output shaft of this vibrating device 4 is arranged with the direction that is parallel to pedestal 1, be used to make detected blade 6 to do the vibration of horizontal direction, bracing or strutting arrangement 2 is provided with vanes fixed device 3, when carrying out the blade vibration test, one end of blade 6 is by 3 clampings of vanes fixed device, the other end is connected with vibrating device 4, at checkout equipment support 5 of detected blade 6 periphery, this checkout equipment support 5 is used to install checkout equipments such as damper or blade eddy current displacement sensor, and the quantity and the installation site of checkout equipment support 5 can be set according to testing requirements in different tests, also can on blade 6 speed pickup be set according to the test needs simultaneously.In the present embodiment, bracing or strutting arrangement 2 comprises bracing frame 21 and four positioning screws 22, four positioning screws 22 are located at four jiaos of pedestal 1, fixedly connected with pedestal 1 by positioning screw 22 in bracing frame 21 bottoms, blade vibration test unit in the present embodiment is not used in the blade vibration modal test, therefore, adopt between bracing frame 21 and the pedestal 1 simply to fixedly connected and get final product.In the present embodiment, vanes fixed device 3 comprises portal support 31, fixedly vice body 32, movable vice body 33 and adjusting screw(rod) 34, portal support 31 both sides are column 311, column 311 lower ends are fixed on the bracing or strutting arrangement 2, rack beam 312 is established in the upper end, column 311 is the one-piece construction of cast form with rack beam 312, this structural stability is good, be convenient to assembling, fixedly vice body 32 and movable vice body 33 are installed between two columns 311, fixedly vice body 32 is positioned at column 311 bottoms, and movable vice body 33 is fixedly between vice body 32 and the rack beam 312, in order to improve clamping stability, fixedly on vice body 32 and the movable vice body 33 jaw plate 37 is being housed all, rack beam 312 is provided with screw, and adjusting screw(rod) 34 is installed in this screw, and adjusting screw(rod) 34 upper ends are provided with rotating handles 341, the lower end is passed movable vice body 33 and is fixedlyed connected by straight pin 36 with a back-up ring 35, column 311 is provided with guide rail 313, and movable vice body 33 two ends are provided with chute 331, and chute 331 is slidedly arranged on the guide rail 313.By 34 rotations of rotating handles 341 controllable adjustable screw rods, make adjusting screw(rod) 34 drive activity vice bodies 33 under the constraint of chute 331 and guide rail 313, do downward or upward motion, make this vanes fixed device 3 not be only applicable to the different blade of fixed measure 6, also can be used for the fixing vane group of forming by many blades 6.
Blade vibration test unit one-piece construction of the present utility model is simply small and exquisite, cost of manufacture is low, be convenient to install, simple to operate, with vanes fixed device 3 end of blade 6 is fixed during use, output terminal with vibrating device 4 is connected with blade 6 then, at detected blade 6 periphery checkout equipment supports 5, on the checkout equipment support 5 vibration signal sensor or damper can be installed, decide according to the vibration-testing needs quantity of checkout equipment support 5 and installation site, after vibrating device 4 makes blade 6 produce forced vibration, detect the vibration parameters of blade by vibration signal sensor.
Vibrating device 4 can be drivers such as vibrator or hydraulic servo driver in the blade vibration test unit of the present utility model; Checkout equipment support 5 can only be established one, also can be provided with many according to testing requirements; The quantity of positioning screw 22 and support spring 23 all can be set flexibly according to actual conditions, and this type of conversion all should be considered as the replacement that is equal to of the present utility model, all should drop within the protection domain of the present utility model.
Claims (10)
1, a kind of blade vibration test unit, it is characterized in that comprising pedestal (1), bracing or strutting arrangement (2), checkout equipment support (5) and be used to make the vibrative vibrating device of blade (6) (4), described bracing or strutting arrangement (2), vibrating device (4) and checkout equipment support (5) all are installed on the pedestal (1), bracing or strutting arrangement (2) is provided with the vanes fixed device (3) that is used for fixing blade (6), and described checkout equipment support (5) is located at detected blade (6) periphery.
2, blade vibration test unit according to claim 1 is characterized in that: described bracing or strutting arrangement (2) comprises bracing frame (21) and positioning screw (22), fixedlys connected with pedestal (1) by positioning screw (22) in support frame as described above (21) bottom.
3, blade vibration test unit according to claim 2 is characterized in that: described positioning screw (22) is outer to be arranged with support spring (23), and described support spring (23) is located between bracing frame (21) and the pedestal (1).
4, blade vibration test unit according to claim 3 is characterized in that: the output shaft of described vibrating device (4) is arranged vertically or is horizontally disposed.
5, blade vibration test unit according to claim 1 is characterized in that: described bracing or strutting arrangement (2) comprises bracing frame (21), is equiped with support spring (23) between support frame as described above (21) and the pedestal (1).
6, blade vibration test unit according to claim 5 is characterized in that: the output shaft of described vibrating device (4) is arranged vertically.
7, according to each described blade vibration test unit in the claim 1 to 6, it is characterized in that: described vanes fixed device (3) comprises portal support (31), fixing vice body (32), movable vice body (33) and adjusting screw(rod) (34), described portal support (31) both sides are column (311), described column (311) lower end is fixed on the bracing or strutting arrangement (2), rack beam (312) is established in column (311) upper end, described fixedly vice body (32) and movable vice body (33) are installed between two columns (311), fixedly vice body (32) is positioned at column (311) bottom, movable vice body (33) is positioned at fixedly between the vice body (32) and rack beam (312), described rack beam (312) is provided with screw, described adjusting screw(rod) (34) is installed in this screw, and the lower end is connected with movable vice body (33), described column (311) is provided with guide rail (313), movable vice body (33) two ends are provided with chute (331), and described chute (331) is slidedly arranged on the guide rail (313).
8, blade vibration test unit according to claim 7 is characterized in that: described column (311) is the one-piece construction of cast form with rack beam (312).
9, blade vibration test unit according to claim 7 is characterized in that: described column (311) is the branch body structure with rack beam (312), and rack beam (312) is connected by securing member with column (311).
10, blade vibration test unit according to claim 7 is characterized in that: described pedestal (1) is provided with the T type groove (11) that is used to install vibrating device (4) and checkout equipment support (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200634798U CN201355303Y (en) | 2009-03-03 | 2009-03-03 | Vibration testing device of vanes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200634798U CN201355303Y (en) | 2009-03-03 | 2009-03-03 | Vibration testing device of vanes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201355303Y true CN201355303Y (en) | 2009-12-02 |
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ID=41411645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200634798U Expired - Fee Related CN201355303Y (en) | 2009-03-03 | 2009-03-03 | Vibration testing device of vanes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201355303Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105258887A (en) * | 2015-10-22 | 2016-01-20 | 西安热工研究院有限公司 | Blade dynamic frequency test apparatus using magnetic excitation |
| CN108593234A (en) * | 2018-05-29 | 2018-09-28 | 中国航发湖南动力机械研究所 | high-cycle fatigue test device and its application |
| CN109855829A (en) * | 2018-12-25 | 2019-06-07 | 大连海事大学 | Dynamic power machine blade vibration characteristic research experiment device |
-
2009
- 2009-03-03 CN CNU2009200634798U patent/CN201355303Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105258887A (en) * | 2015-10-22 | 2016-01-20 | 西安热工研究院有限公司 | Blade dynamic frequency test apparatus using magnetic excitation |
| CN108593234A (en) * | 2018-05-29 | 2018-09-28 | 中国航发湖南动力机械研究所 | high-cycle fatigue test device and its application |
| CN109855829A (en) * | 2018-12-25 | 2019-06-07 | 大连海事大学 | Dynamic power machine blade vibration characteristic research experiment device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091202 Termination date: 20100303 |